Cronologic xTDC4, Руководство пользователя

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2 Hardware
2.1 Installing the Board
The xTDC4 board can be installed in any x1 (or higher amount of lanes) PCIe slot. Make sure
the PC is powered off and the main power connector is disconnected while installing the board.
2.2 xTDC4 Inputs and Connectors
2.2.1 Connectors
The inputs of the xTDC4 are located on the PCIe bracket. Figure 2.3 on page 4 shows the
location of the start input S and the four stop inputs A to D. Lemo-00 connectors are used for
Stop A-D
Start
Figure 2.1: Input connectors of the xTDC4 located on the PCIe bracket.
Lemo 00 connector
dc-offset[i]
D
A
C
+
-
Figure 2.2: Input circuit for each of the five input channels.
input connection. The inputs are AC-coupled and have an impedance of 50Ω - a schematic of
the input circuit is shown in Figure
2.2 on page 3 . The digital trigger threshold can be adjusted
3